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Note 2 - Revenues (Details Textual)
9 Months Ended 12 Months Ended
Jan. 01, 2017
Sep. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Number of Operating Segments     1  
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]        
Number of Major Customers     4 3
Trappsol Cyclo [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | One Major Customer [Member]        
Concentration Risk, Percentage 84.00%      
Aquaplex [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]        
Number of Major Customers   1 1